/Engine/Source/Editor/CurveEditor/Public/Filters/CurveEditorFilterBase.h
Applies the filter to all keys on the specified curves. The curves are passed to the filter as a set so that a filter can choose to operate on multiple curves at once if data from other curves is important.
void ApplyFilter ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FCurveEditor](API\Editor\CurveEditor\FCurveEditor) > InCurveEditor, [FCurveModelID](API\Editor\CurveEditor\FCurveModelID) InCurve, [TArrayView](API\Runtime\Core\Containers\TArrayView)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > InKeyHandles, [TArray](API\Runtime\Core\Containers\TArray)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > & OutKeysToSelect )